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Repowering Te Rere Hau Wind Farm

Repowering Te Rere Hau Wind Farm

NZ Windfarms is currently preparing a fast-track resource consent application to repower the wind assets on our Te Rere Hau site.

We have partnered with Aurecon to help us determine the best solution, ensuring we make the most of our world-renowned Tararua wind resource.

Repowering would see our current two-bladed fleet replaced with larger, more efficient three-bladed turbines, which will offer significant acoustic and visual advantages while also significantly increasing the renewable electricity yield from the Te Rere Hau site.

This project will offer a range of economic, employment, social and environmental benefits, both locally and nationally.

We look forward to sharing information with you as we move through this process and more information becomes available.

For any comments or queries please email us at



About the Project

Over the last 10 years, wind energy has developed significantly. Wind turbines today can generate a lot more electricity than they could a decade ago. Te Rere Hau wind farm sits in a high wind-speed location, but our data shows that we could be making better use of the great Tararua Ranges wind resource.  


Te Rere Hau wind farm currently operates 92 small turbines (30m hub height). A successful resource consent would allow us to replace the older, smaller wind turbines with larger, more efficient designs. 

 Why Repower?  

Repowering offers a range of economic, employment, social and environmental benefits, both locally and nationally. It will:   

  • significantly increase the amount of renewable energy NZ Windfarms will be able to generate  

  • offer significant noise reduction for nearby neighbours  

  • bring jobs to the region during planning and construction  

  • help in Aotearoa New Zealand’s efforts to mitigate climate change and transition to a low-emissions economy.  

What would they look and sound like?   

The proposed new wind turbines are bigger, but quieter than the existing turbines. The average energy output has the potential to increase by a factor of four to five times assuming all 30 turbines are constructed. That’s the same as going from powering 16,000 households to 80,000 households. It’s enough to power 1700 electric cars or allow five mid-sized dairy factories to transition away from coal boilers. Repowering to the larger turbines would reduce the number of turbines from 92 to up to 30 turbines.     

In general, the operational noise of the wind farm would reduce following repowering. Bigger turbines cut in at lower wind speeds and lower rotor speeds, and at full power they’re much quieter than smaller turbines.     


The turbines being considering are two to three generations ahead of the existing fleet. They include direct drive technology (no gearbox), much larger rotors, and special operating modes to reduce noise levels. New turbine blades have design features like serrated edge technology - a pattern that helps improve airflow over the turbine blade, resulting in less turbulence, better aerodynamics, and reduced noise as the blade cuts through the air.    

While the noise level reduction would be significant, the turbines would be significantly larger. Larger turbines would bring Te Rere Hau turbines into visual alignment and uniformity with the wind farm sites to the north and south. Because the blades are bigger, their rotation is slower and much more graceful than the existing shorter ones.


Once installed, the new wind turbines would have a life span of around 20 years.   



Consenting Pathway


Introduced in 2020, the COVID-19 Recovery (Fast-Track Consenting) Act 2020 established a new, short-term consenting process to fast-track projects that can boost employment and economic recovery.  The Act will self-repeal in July 2023. 

It aims to urgently promote employment to support Aotearoa New Zealand’s recovery from the economic and social impacts of COVID-19, and to support the certainty of ongoing investment across the country, while promoting sustainable management of natural and physical resources.   

In December 2021, we applied for the Te Rere Hau Wind Farm Repowering Project to be considered for referral under the Fast-Track Act. 


In late March 2022, the Hon David Parker, Minister for the Environment, accepted our application for referral. The Minister agreed that the Project meets the referral criteria, in that it has the potential to offer a range of economic, employment, social and environmental benefits, both locally and nationally. These benefits include employment, climate change mitigation and a faster transition to a low-emissions economy. 


This means that NZ Windfarms can lodge a resource consent application directly with the Environmental Protection Authority (EPA), and the Project will be considered by an expert consenting panel.    


What’s happening now? 

Now that our application has been referred, we’re moving forward with the fast-track consent application process which includes:

  • continuing ongoing community, iwi and stakeholder engagement and consultation activities. 

  • finalising the proposed design. 

  • preparing the resource consent application and completing a full assessment of environmental effects.   


We are aiming to have the consent application ready to submit to the EPA later this year.  



If you have any questions about this project or would like to be involved in future community engagement, please email  


Key Documents


Related Documents

Neighbour Correspondence

Next Community Meeting

The last community dinner was held on 16 June 2022 at Globe Restaurant, Palmerston North.

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